Delete Gemfile.lock

Gemfile.lock cause the wrong version of google-api-client to be installed ( +    google-api-client (0.7.1) ), that result in the following issue: http://stackoverflow.com/questions/11191173/google-api-ruby-client-not-finding-classes-pkcs12-jwtasserter 

<pre>
+++ b/Gemfile.lock
+    autoparse (0.3.3)
+      addressable (>= 2.3.1)
+      extlib (>= 0.9.15)
+      multi_json (>= 1.0.0)
+    bigquery (0.2.9)
+      google-api-client (>= 0.4.6)
+    extlib (0.9.16)
+    google-api-client (0.7.1)
+      addressable (>= 2.3.2)
+      autoparse (>= 0.3.3)
+      extlib (>= 0.9.15)
+      faraday (>= 0.9.0)
+      jwt (>= 0.1.5)
+      launchy (>= 2.1.1)
+      multi_json (>= 1.0.0)
+      retriable (>= 1.4)
+      signet (>= 0.5.0)
+      uuidtools (>= 2.1.0)
+    launchy (2.4.2)
+      addressable (~> 2.3)
+    retriable (1.4.1)
+    signet (0.5.1)
+      addressable (>= 2.2.3)
+      faraday (>= 0.9.0.rc5)
+      jwt (>= 0.1.5)
+      multi_json (>= 1.0.0)
+    uuidtools (2.1.5)
+  bigquery
</pre>

Dropping Gemfile.lock force gem install to bundle the right version (ex.: in Rails 'bundle install' after adding `gem 'bigquery', github: 'lgs/bigquery'` to Gemfile)